My z3 draining battery overnight please help.

[Hamaad]

 when i sleep battery is 90% and when i wake up battrery is 65% daily. Please tell me waht is the problem i every app is closed.

[affansiddiqui]

My Xperia Z3 dual D6633 is even worse. I charge it before sleeping till it becomes 100% and when I wake up I get my mobile in stamina mode (below 15%). It's happening since I've updated my phone to Android 6.0.1. If there's any Sony support member active please reply and help us regarding this problem.